曲别针

yòng yī gè qū bié zhēn gù dìng zài fēi jī qián duān

用一个曲别针固定在飞机前端。

Fasten a paper clip to the airplane's nose.

néng bù néng zài jiā yī méi qū bié zhēn shǐ tiān píng chóng xīn huī fù píng héng ne

能不能再加一枚曲别针使天平重新恢复平衡呢？

Can you add a second paper clip to make your scale balance again?